How do you guys get such high WHP out of low PSI turbo set ups??
01-13-2011, 07:01 AM
#22
Whats the truth? There are lots of cars that have 9sec traps. Manual supras need about 137-140 to break the 9s, which is about what we'd need as well (maybe a couple mph faster for heavier G35s).
There are plenty of shops with 700-900+whp cars that cant break out of the 11s, let alone impossible 9s. how does that show experience>forum popularity? All that shows is our cars arent good for drag racing, as you know they were tuned excellently. If someone mass produced a TH400 bell housing adapter, 9sec passes would be as common as the supras.
Like everyone has said, how you tune and your risk acceptance level play the biggest role.
People that say our cars are NOT good for drag racing, cant fawking drag race, its the non drivers in them admitting they suck even after spending $30K+ they cant buy skill.
The truth is there are shops out there that have been in the game 2x or more as long as many of the forums perceived top 5 shops to go for a build. Many of those shops have dealt with motors much less forgiving than a VQ.
Any shop can build a 900whp car, the difference is who's car can stay in 1 piece. The mindset that shop A's car that makes more power than shop B's car with the same setup, means that shop A's car is tuned to the ragged edge isnt neccessarily true, but thats the first thing a weaksauce tuner will tell you to justify their skill or lack thereof.
Last edited by Alberto; 01-13-2011 at 07:03 AM.
01-13-2011, 11:17 AM
#28
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Back to the OP, its not about the pressure, but the CFM of air being pushed though the system, a 72mm turbo at 10 psi will put down WAY more power than a 62 mm turbo at 13 psi, because it is forcing more air though the system (and thus more fuel to compensate)... thats why all these ricers with JDM integras and crx's can claim they are running 47000 lbs of boost. They are doing it through needle sized turbos, throw a GT25 turbo on there and lets see what happens 
01-13-2011, 11:43 AM
#29
Op, I noticed you make references to our USA dynos and your fuel octane. Your 99 Ron is about equivalent to our 93 (r+m)/2. So your 99 doesn't mean you should make more power. Also you noted that your numbers are "uncorrected".. Correction brings my power level down. It's all based on a standard of environmental conditions so that power can be compared. I.e. My car in the mountains will make less power than where I live at sea level (simply put) but with the same correction used, it should hypothetically read the same power in both places. I don't think our "USA" dynos read low.. Compare oem z's here to Europe. We make 225-250 on average that i've seen. Is your power on your dynos rated in horsepower? Or kw or ps? Don't feel bad, ive never been able to break 500whp on 14psi so far.
Ross
Ross
God I hope I trap 114+ with my car…new clutch since the last time I went out trapped a whole 102mph…
01-13-2011, 01:12 PM
#34
Hmm…my brother has an identical setup to me (PowerLab GT35R, ProEFI EMS, same boost, within 10 whp of my numbers, 6MT, etc.), only difference is he has a 350Z whereas I have a G35 Coupe… he trapped 116 mph pretty consistently (20+ runs), his best time was 12.5 @ 116 mph.
01-14-2011, 05:01 AM
#35
Raj you dont have to have prime testing conditions to have noticed the huge difference in the poweband my car had before/after the tune change, let alone the peak increases. They can only be attributed to the tuner, not testing conditions.
I have the numbers on a MD DJ from the new setup + Forged Tune then the PFS tune later in the day, its still a big difference.
I have the numbers on a MD DJ from the new setup + Forged Tune then the PFS tune later in the day, its still a big difference.
Is your car back in shape? Come to ZdayZ this year. Screw this debate and let's just have some fun.
01-14-2011, 06:13 AM
#36
Im actually considering selling it finally. Im so back and forth on it, at the end of the day I just dont drive it or really have time to anymore, but thats another topic.
Yes I do agree though, the OP shouldnt worry about dynos, its easy to get caught up in that though when you browse forums a lot, you cant help but compare your car to others in any way shape or form you can, we have all done that at times.
Yes I do agree though, the OP shouldnt worry about dynos, its easy to get caught up in that though when you browse forums a lot, you cant help but compare your car to others in any way shape or form you can, we have all done that at times.
01-14-2011, 06:22 AM
#37
overall numbers might change between dynos, but you'd think that the shape of the curves shouldnt (assume staying on same load type of dyno).
If one car starts making power at 3000 and the other at 4000 with the same setup, it would make you wonder on tuning differences.
If one car starts making power at 3000 and the other at 4000 with the same setup, it would make you wonder on tuning differences.
Last edited by str8dum1; 01-14-2011 at 06:25 AM.
01-14-2011, 06:33 AM
#38
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Who says our car isn't a good drag car :P
http://www.youtube.com/watch?v=c0izKpQsk90
I agree with all the previous post, there are so many variable (compression, parts syncing with each other, tuners). However, I think one of the main issues are the dynos.
http://www.youtube.com/watch?v=c0izKpQsk90
I agree with all the previous post, there are so many variable (compression, parts syncing with each other, tuners). However, I think one of the main issues are the dynos.
01-14-2011, 12:37 PM
#40
just sayin', you put 775+whp in any other platform that goes fast at the strip and it would be faster than the Z. Those heavy domestics do low 10s on 600hp.
Not saying there arent fast Z/Gs, but compared to platforms where proper tranny and suspension mods are super cheap to come by, we dont have a good platform. If they were better drag cars, we wouldnt have so many people making good numbers struggling to get into the 10s. Normally it doesnt take a great driver with 650+hp to get into the 10s, but in our case it does.
Not saying there arent fast Z/Gs, but compared to platforms where proper tranny and suspension mods are super cheap to come by, we dont have a good platform. If they were better drag cars, we wouldnt have so many people making good numbers struggling to get into the 10s. Normally it doesnt take a great driver with 650+hp to get into the 10s, but in our case it does.
Last edited by str8dum1; 01-14-2011 at 12:41 PM.